2020 №08 (08) DOI of Article
2020 №08 (02)

The Paton Welding Journal 2020 #08
TPWJ, 2020, #8, 8-14 pages

Influence of introduction of refractory particles into welding pool on structure and properties of weld metal

V.V. Holovko, D.Yu. Yermolenko, S.M. Stepanyuk, V.V. Zhukov and V.А. Kostin
E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

The investigations of influence of change of sizes of primary dfinishrites in the structure of weld metal on their secondary microstructure and mechanical properties were carried out. It is shown that an increase in the width of dfinishrites is accompanied by a rise in the temperature of start of bainite transformation, but the content of low-temperature bainite in the microstructure of weld grows. The possibility of effect of inoculation by dispersed particles of refractory compounds into welding pool on relationship between the content in the microstructure of weld of components with a coarse-acicular and fine-acicular morphology and, accordingly, on mechanical properties of weld was established. 9 Ref., 4 Tables, 10 Figures.
Keywords: weld, microstructure, dfinishrites, bainite transformation, inoculation, refractory compounds, mechanical properties

Received 30.04.2020


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